package net.sourceforge.queried.gametypes;
   
   import java.net.InetAddress;
   import java.net.UnknownHostException;
   import java.util.ArrayList;
   import java.util.Collections;
   import java.io.UnsupportedEncodingException;
   import net.sourceforge.queried.KillsComparator;
   import net.sourceforge.queried.PlayerInfo;
  import net.sourceforge.queried.ServerInfo;
  import net.sourceforge.queried.Util;
  
  
  public class HLServerInfo {
  
      public static ArrayList getPlayers(int localPort, String ipStr, int port, int infoType, int queryType,
          int gameType) {
          /** On some operating systems the following code will return the wrong number of bytes 
           * in Unicode to UTF-8 conversion
           * 
           * a) byte.getBytes("UTF-8")
           * 
           * b) byte.getBytes() if LANG=en_US.UTF-8 is set in the OS enviroment
           * 
           * The two possible workarounds are:
           * 
           * 'unset LANG' in the OS shell before running your Java code
           * 
           * or 
           * 
           * use byte.getBytes("ISO-8859-1") or any other encoding than UTF-8
           * 
           */
          byte[] buf = null;
          try
          {
              buf = Util.getInfo(localPort, ipStr, port, "UA2S_PLAYER", infoType, queryType, gameType).getBytes("ISO-8859-1");
          }
          catch(UnsupportedEncodingException ex)
          {
              ex.printStackTrace();
          }
          if(buf.length == 0) {
              return null;            
          } 
          else if(buf[0] != buf[1] || buf[1] != buf[2] || buf[2] != buf[3] || buf[4] != 'D') {
              return null;            
          }
  
          ArrayList sorted = new ArrayList();
          int playerCount = buf[5] & 255;
          int off = 6;
          for(int i=0; i<playerCount; ++i) {
              PlayerInfo playerInfo = new PlayerInfo();
              StringBuffer playerName = new StringBuffer(20);
              while(buf[off] != 0) {
                  playerName.append((char)(buf[off++] & 255));
              }
              off++;
              playerInfo.setName(playerName.toString().trim());
              playerInfo.setKills((buf[off] & 255) | ((buf[off+1] & 255) << 8) | 
                  ((buf[off+2] & 255) << 16) | ((buf[off+3] & 255) << 24));
              sorted.add(playerInfo);
              off += 8;
          }
          Collections.sort(sorted, new KillsComparator());
          
          return sorted;
      }
  
      public static ServerInfo getDetails(int localPort, String ipStr, int port, int infoType, int queryType,
          int gameType) {
          /** On some operating systems the following code will return the wrong number of bytes 
           * in Unicode to UTF-8 conversion
           * 
           * a) byte.getBytes("UTF-8")
           * 
           * b) byte.getBytes() if LANG=en_US.UTF-8 is set in the OS enviroment
           * 
           * The two possible workarounds are:
           * 
           * 'unset LANG' in the OS shell before running your Java code
           * 
           * or 
           * 
           * use byte.getBytes("ISO-8859-1") or any other encoding than UTF-8
           * 
           */
          byte[] buf = null;
          try
          {
              buf = Util.getInfo(localPort, ipStr, port, "TSource Engine Query", infoType, queryType, gameType).getBytes("ISO-8859-1");
          }
          catch(UnsupportedEncodingException ex)
          {
              ex.printStackTrace();
          }
          
  
         if(buf.length == 0) {
             return null;            
         } else if(buf[0] != buf[1] || buf[1] != buf[2] || buf[2] != buf[3] || buf[4] != 'm') { 
             return null;            
         } 
         
         ServerInfo serverInfo = new ServerInfo();
         
         int off = 5;
 
         InetAddress inettst;
         try {
             inettst = InetAddress.getByName(ipStr);
             serverInfo.setIp(inettst.getHostAddress());
         } catch (UnknownHostException e) {
             serverInfo.setIp(ipStr);
         }
 
         serverInfo.setPort(port +"");
 
         while(buf[off] != 0) {
             off++;
         }
 
         off++;
 
         StringBuffer netName = new StringBuffer(20);
         while(buf[off] != 0) {
             netName.append((char)(buf[off++] & 255));
         }
         serverInfo.setName(netName.toString());
         
         off++;
         
         StringBuffer mapName = new StringBuffer(20);
         while(buf[off] != 0) {
             mapName.append((char)(buf[off++] & 255));
         }
         serverInfo.setMap(mapName.toString());
         
         off++;
 
         // skip game directory
         while(buf[off] != 0) {
             off++;
         }
         
         off++;
 
         StringBuffer gameDesc = new StringBuffer(20);
         while(buf[off] != 0) {
             gameDesc.append((char)(buf[off++] & 255));
         }
         serverInfo.setGame(gameDesc.toString());
 
         off++;
         
         int playerCount = buf[off] & 255;
         serverInfo.setPlayerCount(playerCount +"");
         
         off++;
         
         int maxPlayerCount = buf[off] & 255;
         serverInfo.setMaxPlayers(maxPlayerCount +"");
         serverInfo.setFullResponse(new String(buf));
 
         return serverInfo;
     }
     
 }